Large Diameter Compass
Need a compass to draw a circle that's two to five feet or so in diameter ?
Use a wooden yardstick.
Just drill a 1/16" dia. hole on the 1" line - and a 1/8" dia. hole at your radius point (be sure to add 1").
Use a push-pin in the 1/16" hole as your center….and a sharp pencil through the 1/8" hole to draw your line.